<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>简易计算器</title>
  </head>

  <body>
    <form action="" method="post" id="myform" name="myform">
      <table border="0">
        <tr>
          <td><img src="images/logo.png" width="54" height="54" /></td>
          <td colspan="3">
            <h3>简易计算器</h3>
          </td>
        </tr>
        <tr>
          <td>第一个数</td>
          <td colspan="3">
            <input name="txtNum1" type="text" id="txtNum1" size="25" />
          </td>
        </tr>
        <tr>
          <td>第二个数</td>
          <td colspan="3">
            <input name="txtNum2" type="text" id="txtNum2" size="25" />
          </td>
        </tr>
        <tr>
          <td>
            <input name="addButton2" type="button" id="addBtn" value="  ＋  " />
          </td>
          <td>
            <input name="subButton2" type="button" id="subBtn" value="  －  " />
          </td>
          <td>
            <input name="mulButton2" type="button" id="mulBtn" value="  ×  " />
          </td>
          <td>
            <input name="divButton2" type="button" id="divBtn" value="  ÷  " />
          </td>
        </tr>
        <tr>
          <td>计算结果</td>
          <td colspan="3">
            <input name="txtresult" type="text" id="txtResult" size="25" />
          </td>
        </tr>
      </table>
    </form>
  </body>
</html>
